“QUALITY”
Evidence →“GMP-certified” describes factory processes, not what is in the bottle. The claim does not name a certifier or public register that a shopper can check.
Exact product checked · GTIN 00012239000645Sandhu's · checked Jul 22, 2026 · on sale since Apr 30, 2020🇺🇸 USPTO wordmark owner · Sandhu Products, Inc. · CALIFORNIA, USA
Quick read · Sandhu's
Quercetin 500mg Vegetarian Capsules 120 Count
Checked against public sources between July 22 and August 31, 2026 · LookCloser does not sell or recommend supplements.
120capsules
Does the marketing hold up?
The barcode identity checks out · 012239000645. The barcode matches, so we are checking the right product rather than a look-alike.
Is the dose real?Can’t check — no panel filed
What a serving costsNo price found for this exact barcode
Is it tested?Claimed — not yet checked
Who’s behind it?🇺🇸Sandhu Products, Inc.corporation · CALIFORNIA, USA
Is it the real thing?✓Barcode matches outside records
Trouble on record?Recall check not run yeta gap in our records, not a finding about the product
“Couldn’t verify” means we looked and found no public proof — not a mark against the product. Most supplement claims cannot be independently verified by anyone, so grey is the normal state of this industry.
2◖ partly confirmed1? couldn’t verifyno contradictions · no recalls
Marketing claims, checked
The checks, one by one
The public sources did not settle the marketing promises on this label.
◐Partly confirmed2
“THIRD-PARTY LAB TESTED FOR PURITY & POTENCY: Manufactured in an NSF-certified, cGMP-compliant facility in California, every batch is rigorously…”
Evidence →A testing body is named on the listing, but we found no lot-specific certificate of analysis.
Ingredient research can support context, but it is not a trial of this exact product.
?Couldn’t verify independently1
“IN USA WITH GLOBALLY”
Evidence →“Made in USA” can describe only final bottling. Ingredient-sourcing records were not located for this product.
We looked and found no public proof. That does not count against the product.
Marketing language, not scored
High strength Quercetin for
Quick read · 1 useful finding
What is worth knowing.
Headlines first. Open evidence only when you want the source trail.
CheckedWho is behind it?
The barcode identity checks out · 012239000645.
The barcode matches, so we are checking the right product rather than a look-alike.
Evidence and sources
UPCitemdb resolves 012239000645 to "Sandhu s Quercetin Dietary Supplement for Respiratory Health 1000mg per Servin" (SANDHU S) — consistent with this listing.
Locked evidence record →Open the full source-linked findingWhat remains open 1
- We have not found a public label filing for this exact product.
These are evidence gaps, not strikes against the product.
Who owns the brand wordmark?
🇺🇸
Sandhu Products, Inc.Corporation · exact supplement-class mark for SANDHU'S
Filed address
4580 Contractors Place, Livermore, California 94551, UNITED STATES
USPTO identifies the public owner or applicant behind this brand wordmark. This does not by itself identify the product manufacturer or prove where the product was made. Open USPTO source ↗
Research behind the findings
Dose and research context
We could not match an amount on this product to a studied range for the same ingredient, so these links are ingredient background rather than a measurement of this product.
Where it sells
Price check for this exact product
Amazon
Exact UPC/GTIN match$22.98
matching UPC/GTIN · checked Sep 2, 2026
View on Amazon ↗Brand website
Official product-page candidate · UPC absent$56.00
Official shopping lead; excluded from exact price comparisons.
Quercetin Vegetarian Capsules 120 Ct · 2. Confirm the package UPC/GTIN before buying.
Check brand website ↗iHerb
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search iHerb ↗Target
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Target ↗Walmart
Not confirmedNo exact listing saved
We only show a price when the seller publishes the same barcode as the bottle. We haven’t found that match here.
Search Walmart ↗Only one exact price was available at build time; prices change by date, seller, and promotion.
The brand-page price is shown as a shopping lead only. It is excluded from the exact-product price difference because the page does not publish this record's matching UPC/GTIN.
Reference prices only · no affiliate links · every compared seller must publish the matching UPC/GTIN.
Want to inspect the evidence?
The full report shows every source, the exact unresolved question, and the documentation that would settle it.
Record built September 03, 2026. Sources: source listing observed at check time · USPTO Trademark Search · Keepa exact-listing history · NIH / published research · certification and regulator records where available. LookCloser publishes evidence and gaps; it does not advise for or against any supplement. Evidence-based corrections welcome.